package com.ly.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ly.reggie.common.R;
import com.ly.reggie.pojo.Employee;
import com.ly.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.omg.CORBA.PUBLIC_MEMBER;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * 员工管理
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

        //1.将页面提交的密码进行md5加密处理
        String password = employee.getPassword();
        String newPassword = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = Wrappers.lambdaQuery();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查到则返回登录失败结果
        if (emp == null) {
            return R.error("登录失败，用户名不存在");
        }

        //4.密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(newPassword)) {
            return R.error("登录失败，密码错误");
        }

        //5.查看员工状态，如果为已禁用状态，则返回员工以禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //6.登陆成功，将员工id存入到Session并且返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }


    /**
     * 员工退出
     *
     * @param
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //清除Session中保存的当前登录员工的id
        request.removeAttribute("employee");
        return R.success("退出成功");
    }


    /**
     * 新增员工
     *
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}", employee.toString());

        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        更新当前时间和操作对象,被MyMetaObjectHandler类公共处理
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户id
        Long empId = (Long) request.getSession().getAttribute("employee");

//        更新当前时间和操作对象,被MyMetaObjectHandler类公共处理
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功，初始密码为123456");
    }


    /**
     * 员工信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {},name = {}", page, pageSize, name);

        //构造分页构造器
        Page<Employee> pageInfo = new Page<>(page, pageSize);


        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序体条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);


        //执行查询
        employeeService.page(pageInfo, queryWrapper);


        return R.success(pageInfo);
    }


    /**
     * 根据id修改员工信息
     *
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());

        //获取当前用户对象
        Long empId = (Long) request.getSession().getAttribute("employee");

//        更新当前时间和操作对象,被MyMetaObjectHandler类公共处理
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);

        //执行更新修改
        employeeService.updateById(employee);


        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应员工共信息");
    }
}
